Since we use a ScopedPtrList to track cover grammar expressions we don't know
the position of the commas anymore. The position of the commas was used to
demark the initializer, which is needed to figure out whether we need hole
checks for variable references. (Typically only references within the
initializer need hole checks for the initialized variable.) Since we didn't
have the comma position, we simply used the position of the first expression as
the position of any subsequent comma, which would make it seem as if the
initializer body wasn't in the initializer. Now instead we simply use the
position of the subsequent parameter as the end of the initializer, which is
close enough.
Bug: chromium:902810
Change-Id: I8d2bc7a2dc9f59db16ce56ccef01e263a18a3b7a
Reviewed-on: https://chromium-review.googlesource.com/c/1326022
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57357}
Currently, in debug mode the snippets check the result of decompression equals
to the full value stored in the field.
Bug: v8:7703
Change-Id: I0caa7fdaa7d346612084706ed96a4330fcb0c236
Reviewed-on: https://chromium-review.googlesource.com/c/1319575
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57354}
Increase width of resizers and clean up CSS.
Drive-by: Add hot recompile watch command. Run
npm run-script watch
and rollup will recompile on file changes.
Notry: true
Bug: v8:7327
Change-Id: If24e18049ff565a7584b5cca9c64431e4ac03f77
Reviewed-on: https://chromium-review.googlesource.com/c/1320852
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57353}
Introduce a typedef to avoid repeating the function definition multiple
times.
R=ahaas@chromium.org
Change-Id: I9d8a2a9b663f86ce0f6e21edf6d4a6d5ae450efc
Reviewed-on: https://chromium-review.googlesource.com/c/1325963
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57352}
The Ignition statement list visitor will skip the rest of the
statements in the list if it hits a jump statement (like a return
or break), as the rest of the code in the list can be considered
dead.
return;
dead_call(); // skipped
However, since this is at an AST node level, it does not take into
account condition shortcutting:
if(2.2) return;
dead_call(); // not skipped
There is also a second dead code elimination in Ignition compilation, at
the bytecode array writer level, where a bytecodes are not emitted if an
"exit" bytecode (Return, Jump, or a few others) has been written, until
the next basic block starts (i.e. a Bind).
This can cause an issue with statements that resurrect the bytecode
array writer part-way through their visit. An example is try-catch
statements, which save the context to a register, and then Bind to start
the try region.
For the case:
if (2.2) return;
try { // try statement not skipped
...
}
the bytecode writer is called with
OutputReturn() // exit bytecode seen
OutputMove(<context>, r1) // not emitted
Bind(&try_begin) // starts new basic block
// try body
So, the try is emitted, but without saving the context to a register.
This means that the liveness analysis sees the read of that register
(as the output liveness of throwing bytecodes), but does not have a
write to the register, which means that the liveness escapes.
This patch fixes this by using the bytecode array writer dead-code
elimination (i.e. "exit bytecode seen") to inform the statement list
visitor, so that in this example the try statement is not visited at
all.
Bug: chromium:902395
Change-Id: Ieb8e46a4318df3edbac0ae17235e0ce8fba12ee3
Reviewed-on: https://chromium-review.googlesource.com/c/1322951
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57350}
As opposed to the register.
For subtle reasons, this fixes a deoptimizer bug with handling return
values in lazy deopt. Since the return values can now only overwrite
the accumulator, there is no danger of overwriting a captured object
that might be later used (since there is no "later").
Bug: chromium:902608
Change-Id: I3a7a10bb1c7a6f4303a01d60f80680afcb7bc942
Reviewed-on: https://chromium-review.googlesource.com/c/1325901
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57349}
Also brokerize a few things along the way.
Bug: v8:7790
Change-Id: I40d8175fd1c86901af3d128f0d0a1e29e56723d9
Reviewed-on: https://chromium-review.googlesource.com/c/1319751
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57345}
This is a hacky approach to make constant field tracking somewhat
friendly to class boilerplates - if the class boilerplate has
an on-descriptor-data field, we change the field to be
an on-instance-const-field and store it on the instance.
Bug: v8:8361
Change-Id: I5152041363bcd26568669fee93c91ff362ba8de9
Reviewed-on: https://chromium-review.googlesource.com/c/1319869
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57344}
Installation of the PrototypePropertyDependency, as well as GC, can
invalidate dependencies.
Bug: chromium:902552
Change-Id: Iabcce026c7475c722d19ac0b80758b22d9fbcfda
Reviewed-on: https://chromium-review.googlesource.com/c/1322450
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57343}
This fixes an issue introduced in https://crrev.com/c/1301483.
The JSArray allocation could trigger GC and thus elements must be
fully initialized.
Bug: v8:8429,chromium:890599
Change-Id: I7bfa1728c1dde7fc880063e095413163b13be2d5
Reviewed-on: https://chromium-review.googlesource.com/c/1322955
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57342}
Requires ICU 63 or above be used when building v8
1. Remove unneeded #include of icu header files
2. Remove code inside "#if U_ICU_VERSION_MAJOR_NUM < x"
block where x is 63 or smaller.
Bug: v8:8401 v8:5751
Change-Id: I908b0d7d174df53d4296580fe7150417322b0b21
Reviewed-on: https://chromium-review.googlesource.com/c/1314112
Reviewed-by: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57341}
Previously, we finalize all compile jobs at once. This keeps the zone memory
in every compile job alive until the end. This contributes to a high peak
memory when many functions are compiled eagerly, for example when producing
cache data for the ServiceWorker cache.
Memory tracked by the AccountingAllocator in bytes, prior to this change in
the test case:
peak memory after init: 8192
peak memory after lazy compile: 41200
peak memory after lazy compile: 41200
peak memory after eager compile: 164256
With this change, if we are compiling on the main thread, we finalize every
compile job as soon as it is done and dispose the compile job and its zone
memory.
After this change:
peak memory after init: 8192
peak memory after lazy compile: 41200
peak memory after lazy compile: 41200
peak memory after eager compile: 41376
R=leszeks@chromium.org, rmcilroy@chromium.org
Bug: chromium:901329
Change-Id: Iae0c89396c89692c4ecdeec3970d3c62031d2bce
Reviewed-on: https://chromium-review.googlesource.com/c/1322949
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57340}
regress-336820 is testing that joining a very sparse
array to create a too-big string results in a RangeError,
rather than a crash. Reducing the largest index by
two orders of magnitude speeds this up (on x64 debug)
by 8x (from 8 seconds down to 1). Given that this test
takes nearly 9 minutes on arm64 sim debug, I hope to
see big ones there too.
Bug: v8:7783, chromium:336820
Change-Id: I74c22cf451a892eb039efc7f1259152921bf8530
Reviewed-on: https://chromium-review.googlesource.com/c/1323915
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57335}
The goal is to roll in my upstream patch [1] which speeds up some of the
slowest tests. The impact is especially noticeable on the builder named
“V8 Linux - arm64 - sim - debug”.
Before [2]:
08:57:047 test262/built-ins/RegExp/CharacterClassEscapes/character-class-non-digit-class-escape-flags-u *
08:56:265 test262/built-ins/RegExp/CharacterClassEscapes/character-class-non-word-class-escape-flags-u *
08:53:736 test262/built-ins/RegExp/CharacterClassEscapes/character-class-non-whitespace-class-escape-flags-u *
08:26:101 test262/built-ins/RegExp/CharacterClassEscapes/character-class-non-whitespace-class-escape-flags-u *
06:57:767 test262/built-ins/RegExp/CharacterClassEscapes/character-class-non-word-class-escape-flags-u *
05:04:746 test262/built-ins/RegExp/CharacterClassEscapes/character-class-non-digit-class-escape-flags-u *
01:46:609 test262/built-ins/Array/prototype/filter/15.4.4.20-9-c-ii-1 *
[…other unrelated tests…]
After [3]:
01:46:630 test262/built-ins/Array/prototype/filter/15.4.4.20-9-c-ii-1 *
[…other unrelated tests…]
That is, tests that previously took almost 9 minutes to run now don’t even
show up in the list of slowest tests anymore.
[1] https://github.com/tc39/test262/pull/1927
[2] https://logs.chromium.org/logs/v8/buildbucket/cr-buildbucket.appspot.com/8930575270954225344/+/steps/Test262_-_no_variants/0/logs/durations/0
[3] https://logs.chromium.org/logs/v8/buildbucket/cr-buildbucket.appspot.com/8930489323837575408/+/steps/Test262_-_no_variants/0/logs/durations/0
Bug: v8:7834
Change-Id: I1d0cea3b64223f7b0ec89c46235632855b8c7eee
Reviewed-on: https://chromium-review.googlesource.com/c/1323733
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57332}
The set of locales available there seems different from what
the tests expect.
Tbr: ftang@chromium.org
Bug: v8:8413
Change-Id: Icd4a072d1a7199772b7713485a558c5db54fc30d
Reviewed-on: https://chromium-review.googlesource.com/c/1323914
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57330}
which will allow gm to work for more directories than just [<arch>].[<mode>]:
gm.py ia32.release-nosnap.check
gm.py x64.optdebug-ptr-compr cctest unittests
Basically the new usage is:
gm.py [<arch>].[<mode>[-<suffix>]].[<target>] [testname...]
Once default gn configuration is created based on <arch> and <mode> the script user
may change it and then use gm as usual.
Bug: v8:8238
Change-Id: I9659b87073e815e0e4754f0a2f1056f3403c149c
Reviewed-on: https://chromium-review.googlesource.com/c/1323734
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57328}
This test takes nearly 10 minutes to run on arm64, and over 5 on arm.
Bug: v8:7783
Change-Id: I6798c001a76c59974729e4b2618167578eb50a1b
Reviewed-on: https://chromium-review.googlesource.com/c/1321034
Commit-Queue: Adam Klein <adamk@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57327}
This is a reland of 007c003426
In the original commit below, the permutation of testing combinatino
test/intl/regress-8413.js take too long to complete in the TSAN
and fail by TIMEOUT. Therefore we fix it by splitting up the test to
smaller tests, one for each property type in Table 5 of ECMA402.
Original change's description:
> [Intl] Handle 'c' pattern for DateTimeFormat
>
> Handle the pattern 'c' return by ICU in Intl.DateTimeFormat
> for weekday standalone form.
> Add regression test to ensure all the standalone pattern return
> option are in the expected list.
>
> Bug: v8:8413
> Change-Id: I9ab42383e3882ef1720606830624775e2748fccb
> Reviewed-on: https://chromium-review.googlesource.com/c/1318092
> Reviewed-by: Jungshik Shin <jshin@chromium.org>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Commit-Queue: Frank Tang <ftang@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#57299}
Bug: v8:8413
Change-Id: I7a4bfd0876e4afd3eddaf3cb3d9027db075a1e3c
Reviewed-on: https://chromium-review.googlesource.com/c/1321893
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57324}
This is a bit of a performance bottleneck currently and
we're planning on improving performance by adding caching.
These benchmarks will allow us to measure the improvements
Add benchmark tests for
String.prototype.localeCompare()
Date.prototype.toLocaleString()
Date.prototype.toLocaleDateString()
Date.prototype.toLocaleTimeString()
Number.prototype.toLocaleString()
Run with
python -u tools/run_perf.py --binary-override-path \
out/x64.release/d8 --filter "JSTests/Strings/StringLocaleCompare" \
test/js-perf-test/JSTests.json
python -u tools/run_perf.py --binary-override-path \
out/x64.release/d8 --filter "JSTests/Dates" \
test/js-perf-test/JSTests.json
python -u tools/run_perf.py --binary-override-path \
out/x64.release/d8 --filter "JSTests/Numbers" \
test/js-perf-test/JSTests.json
Before the landing of dffaff7769
git reset --hard 474a6d6364
got
StringLocaleCompare-Strings(Score): 13240000
toLocaleDateString-Dates(Score): 1877000
toLocaleString-Dates(Score): 1197000
toLocaleTimeString-Dates(Score): 2147000
toLocaleDateString-Dates(Score): 1908000
After the landing of dffaff7769
git reset --hard dffaff7769
got
StringLocaleCompare-Strings(Score): 97182
toLocaleDateString-Dates(Score): 10436
toLocaleString-Dates(Score): 10436
toLocaleTimeString-Dates(Score): 10669
toLocaleString-Numbers(Score): 2876
Bug: chromium:901748
Change-Id: Ibfea85fe668f1bfaacb2dfe08368cd920d2bbfc6
Reviewed-on: https://chromium-review.googlesource.com/c/1318099
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57323}
Instead we can typically check whether the expression or statement we just
parsed indicate failure.
Bug: v8:8363, v8:7926
Change-Id: I477511f9f2f0e615a07285db858a237af8478edc
Reviewed-on: https://chromium-review.googlesource.com/c/1323553
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57322}
That allows us to keep on running further without explicit RETURN_IF
Bug: v8:8363, v8:7926
Change-Id: If1424a1dae656ac725a8443b09ea1b8cc25dfcb1
Reviewed-on: https://chromium-review.googlesource.com/c/1322953
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57319}
Compilation units currently contain pointers into allocated space that
contains the code of the respective function. This requires us to keep
the StreamingDecoder alive as long as compilation is still running
(including tiering).
This CL refactors this by having an additional redirection
(WireBytesStorage) which can point to either the StreamingDecoder or
the NativeModule. We only keep the code section buffer alive as long as
the StreamingWireBytesStorage is still in use.
I will further refactor memory ownership in a follow-up CL to not make
the AsyncCompileJob keep the StreamingDecoder alive.
R=ahaas@chromium.org
Bug: v8:8343,v8:7921,v8:8050
Change-Id: I780582c3217abf64000454f2c9c108b9ac9fbff1
Reviewed-on: https://chromium-review.googlesource.com/c/1319588
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57317}
Recursion is really only useful for sloppy eval and with scopes, which are
uncommon.
Change-Id: I2560b600cab9b00a82d5837a3daa28c8d38c2959
Reviewed-on: https://chromium-review.googlesource.com/c/1322451
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57316}
This is a reland of b8e8b0de4f
Original change's description:
> [ptr-compr] Fix incorrectly used machine types
>
> in TurboFan, CSA, Wasm and compiler tests. Tagged values decompression
> logic will depend on the machine type of the value being loaded so it must
> be correct.
>
> Bug: v8:7703
> Change-Id: Ia9e7cc1e273e5a458d9de8aaa4adb0c970413b8b
> Reviewed-on: https://chromium-review.googlesource.com/c/1319573
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#57280}
Bug: v8:7703
Change-Id: I2c740bab9a800520ebfb83334345bd5641b7e408
Reviewed-on: https://chromium-review.googlesource.com/c/1320850
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57314}
If builtins are embedded and we're not generating the snapshot, then
completely skip iterating over the dispatch table, since off-heap
bytecode handlers can never move or be collected.
Additionally the dispatch table is initialized elsewhere so skip
iterating over the table completely when serializing/deserializing.
Bug: chromium:902230
Change-Id: I2cfe5b4b325d100145d5759ff97e0c8dde7ed7a3
Reviewed-on: https://chromium-review.googlesource.com/c/1319750
Commit-Queue: Dan Elphick <delphick@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57312}
This is currently dead code as intl no longer uses this to reset the
cache. Intl will use a different caching strategy in the future.
Bug: v8:5751
Change-Id: I343fa8afe5069cb7228106b3cd355d004aed199f
Reviewed-on: https://chromium-review.googlesource.com/c/1319766
Reviewed-by: Frank Tang <ftang@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57311}
in order to make the test compatible with the pointer compression friendly
heap layout.
Bug: v8:8182
Change-Id: I34a0c597b70687f7ae7dad19df60c94520fa349f
Reviewed-on: https://chromium-review.googlesource.com/c/1317818
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57310}
